AU6001800A - Adjustable filter - Google Patents

Adjustable filter

Info

Publication number
AU6001800A
AU6001800A AU60018/00A AU6001800A AU6001800A AU 6001800 A AU6001800 A AU 6001800A AU 60018/00 A AU60018/00 A AU 60018/00A AU 6001800 A AU6001800 A AU 6001800A AU 6001800 A AU6001800 A AU 6001800A
Authority
AU
Australia
Prior art keywords
tuning
tuning circuit
filter
oscillator
signals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
AU60018/00A
Other languages
English (en)
Inventor
James Digby Yarlet Collier
Ian Michael Sabberton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Technologies International Ltd
Original Assignee
Cambridge Silicon Radio Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cambridge Silicon Radio Ltd filed Critical Cambridge Silicon Radio Ltd
Publication of AU6001800A publication Critical patent/AU6001800A/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/06—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges
    • H03J3/08—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges by varying a second parameter simultaneously with the tuning, e.g. coupling bandpass filter
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
    • H03B5/1262—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising switched elements
    • H03B5/1265—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising switched elements switched capacitors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2201/00—Aspects of oscillators relating to varying the frequency of the oscillations
    • H03B2201/02—Varying the frequency of the oscillations by electronic means
    • H03B2201/025—Varying the frequency of the oscillations by electronic means the means being an electronic switch for switching in or out oscillator elements
    • H03B2201/0266—Varying the frequency of the oscillations by electronic means the means being an electronic switch for switching in or out oscillator elements the means comprising a transistor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J2200/00—Indexing scheme relating to tuning resonant circuits and selecting resonant circuits
    • H03J2200/10—Tuning of a resonator by means of digitally controlled capacitor bank

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Valve Device For Special Equipments (AREA)
  • Transceivers (AREA)
  • Transmitters (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
AU60018/00A 1999-07-19 2000-07-18 Adjustable filter Abandoned AU6001800A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9916901 1999-07-19
GBGB9916901.3A GB9916901D0 (en) 1999-07-19 1999-07-19 Adjustable filter
PCT/GB2000/002759 WO2001006637A1 (en) 1999-07-19 2000-07-18 Adjustable filter

Publications (1)

Publication Number Publication Date
AU6001800A true AU6001800A (en) 2001-02-05

Family

ID=10857505

Family Applications (1)

Application Number Title Priority Date Filing Date
AU60018/00A Abandoned AU6001800A (en) 1999-07-19 2000-07-18 Adjustable filter

Country Status (12)

Country Link
US (1) US6681102B1 (es)
EP (1) EP1198878B1 (es)
JP (1) JP2003505901A (es)
AT (1) ATE251816T1 (es)
AU (1) AU6001800A (es)
CA (1) CA2379868A1 (es)
DE (1) DE60005841T2 (es)
DK (1) DK1198878T3 (es)
ES (1) ES2208366T3 (es)
GB (1) GB9916901D0 (es)
TW (1) TW490927B (es)
WO (1) WO2001006637A1 (es)

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US6424222B1 (en) * 2001-03-29 2002-07-23 Gct Semiconductor, Inc. Variable gain low noise amplifier for a wireless terminal
EP1438841A2 (en) 2001-10-16 2004-07-21 Rfstream Corporation Monolithic integrated circuit for a television receiver
US7050781B2 (en) * 2002-05-16 2006-05-23 Intel Corporation Self-calibrating tunable filter
US7199844B2 (en) 2002-05-28 2007-04-03 Rfstream Corporation Quadratic nyquist slope filter
EP1514346A2 (en) 2002-05-29 2005-03-16 Ukom, Inc. Image rejection quadratic filter
JP2005535160A (ja) 2002-05-29 2005-11-17 株式会社ＲｆＳｔｒｅａｍ 逐次近似を使用する同調方法および装置
US6882245B2 (en) 2002-06-05 2005-04-19 Rf Stream Corporation Frequency discrete LC filter bank
EP1437829B1 (en) * 2003-01-09 2008-03-12 Phonak Communications Ag Method and integrated circuit for tuning an LC resonator and electrical apparatus comprising an LC resonator
US6940365B2 (en) 2003-07-18 2005-09-06 Rfstream Corporation Methods and apparatus for an improved discrete LC filter
EP1555753A1 (en) * 2004-01-14 2005-07-20 Dialog Semiconductor GmbH High Q linear controlled variable capacitor
EP1555752A1 (en) * 2004-01-14 2005-07-20 Dialog Semiconductor GmbH High Q linear controlled variable capacitor using translinear amplifier
US7508898B2 (en) * 2004-02-10 2009-03-24 Bitwave Semiconductor, Inc. Programmable radio transceiver
TWI373925B (en) * 2004-02-10 2012-10-01 Tridev Res L L C Tunable resonant circuit, tunable voltage controlled oscillator circuit, tunable low noise amplifier circuit and method of tuning a resonant circuit
US7251466B2 (en) * 2004-08-20 2007-07-31 Xceive Corporation Television receiver including an integrated band selection filter
KR20070050464A (ko) * 2004-09-08 2007-05-15 코닌클리즈케 필립스 일렉트로닉스 엔.브이. Ｒｆ 튜너, 조합 ｒｆ 튜너, 튜너 및 멀티미디어 장치
JP4672500B2 (ja) * 2005-09-27 2011-04-20 富士通テン株式会社 アンテナ入力装置
US20080007365A1 (en) * 2006-06-15 2008-01-10 Jeff Venuti Continuous gain compensation and fast band selection in a multi-standard, multi-frequency synthesizer
US7672645B2 (en) * 2006-06-15 2010-03-02 Bitwave Semiconductor, Inc. Programmable transmitter architecture for non-constant and constant envelope modulation
US7860477B2 (en) * 2007-08-23 2010-12-28 Infineon Technologies Ag Self-calibrating filter
KR100886434B1 (ko) * 2007-11-06 2009-03-02 한국전자통신연구원 채널 대역 가변적인 시스템 및 가변 필터 제어 방법
FR2927742A1 (fr) * 2008-02-15 2009-08-21 St Microelectronics Sa Filtre a resonateur acoustiques de type baw reconfigurable par voie numerique et procede
JP4557086B2 (ja) * 2008-06-24 2010-10-06 カシオ計算機株式会社 電波受信装置
US8145172B2 (en) * 2008-11-25 2012-03-27 Silicon Laboratories Inc. Low-cost receiver using tracking filter
US8494470B2 (en) 2008-11-25 2013-07-23 Silicon Laboratories Inc. Integrated receivers and integrated circuit having integrated inductors
US8145170B2 (en) * 2008-11-25 2012-03-27 Silicon Laboratories Inc. Low-cost receiver using tracking bandpass filter and lowpass filter
JP4715926B2 (ja) * 2009-01-14 2011-07-06 カシオ計算機株式会社 電波受信装置
JP4816764B2 (ja) * 2009-05-28 2011-11-16 カシオ計算機株式会社 電波受信装置
US8791767B2 (en) * 2010-10-29 2014-07-29 Qualcomm Incorporated Package inductance compensating tunable capacitor circuit
JP2012186596A (ja) * 2011-03-04 2012-09-27 Alps Electric Co Ltd デジタル放送受信装置
US8725103B2 (en) 2012-01-03 2014-05-13 Silicon Laboratories Inc. Receiver including a tracking filter
US8983417B2 (en) 2012-01-03 2015-03-17 Silicon Laboratories Inc. Low-cost receiver using integrated inductors
JP2013211814A (ja) * 2012-03-30 2013-10-10 Sony Corp 信号処理装置および方法、並びに、通信装置
CN103337717B (zh) * 2013-06-25 2015-07-08 华为技术有限公司 天线阻抗匹配装置、半导体芯片和方法

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JPS58198926A (ja) * 1982-05-17 1983-11-19 Matsushita Electric Ind Co Ltd 受信装置
JPS59133738A (ja) * 1983-01-20 1984-08-01 Yaesu Musen Co Ltd Ｐｌｌシンセサイザ方式
JPH063866B2 (ja) * 1985-06-13 1994-01-12 ソニー株式会社 同調回路装置
KR870001910B1 (ko) * 1985-05-31 1987-10-21 삼성전자부품 주식회사 다중챈널방송수신기의 하이패스/로우패스 절환필터
DE3522652A1 (de) 1985-06-25 1987-01-08 Blaupunkt Werke Gmbh Schaltungsanordnung zur abstimmung von empfaengern
GB2190255B (en) * 1986-04-30 1989-11-29 Philips Electronic Associated Electrical filter
JPH0744429B2 (ja) * 1987-01-21 1995-05-15 松下電器産業株式会社 受信装置
JPH01317004A (ja) * 1988-06-17 1989-12-21 Citizen Watch Co Ltd スイッチトキャパシタ回路および該回路を用いたディジタル温度補償水晶発振回路
JPH0334717A (ja) * 1989-06-30 1991-02-14 Nippon Telegr & Teleph Corp <Ntt> フイルタ装置
JPH03201723A (ja) * 1989-12-28 1991-09-03 Fujitsu General Ltd アップコンバータ
JP2985489B2 (ja) * 1992-03-31 1999-11-29 日本電気株式会社 位相同期ループ
JPH07240667A (ja) * 1994-02-25 1995-09-12 Toko Inc 高周波同調回路
JPH07297743A (ja) * 1994-04-28 1995-11-10 Toko Inc ダブルコンバージョン方式のラジオ受信機
JP3478313B2 (ja) * 1995-01-25 2003-12-15 ソニー株式会社 受信機
DE69632040T2 (de) * 1996-01-10 2004-09-30 Koninklijke Philips Electronics N.V. Tv/fm-empfänger für multimedia-anwendungen
JPH10164164A (ja) * 1996-11-25 1998-06-19 Matsushita Electric Ind Co Ltd デジタル復調器
US5880643A (en) 1997-11-17 1999-03-09 Telefonaktiebolaget L M Ericsson Monolithic high frequency voltage controlled oscillator trimming circuit
JP3114680B2 (ja) * 1997-12-15 2000-12-04 日本電気株式会社 アクティブフィルタ
DE69935632T2 (de) 1998-04-16 2007-10-04 Koninklijke Philips Electronics N.V. Empfänger und ein Verfahren zur Abstimmung von einer der Hochfrequenzstufen in einem Empfänger
US6426680B1 (en) 1999-05-26 2002-07-30 Broadcom Corporation System and method for narrow band PLL tuning
AU2147900A (en) 1998-11-12 2000-05-29 Broadcom Corporation Fully integrated tuner architecture

Also Published As

Publication number Publication date
EP1198878B1 (en) 2003-10-08
ES2208366T3 (es) 2004-06-16
JP2003505901A (ja) 2003-02-12
EP1198878A1 (en) 2002-04-24
CA2379868A1 (en) 2001-01-25
DE60005841D1 (de) 2003-11-13
DK1198878T3 (da) 2004-02-02
DE60005841T2 (de) 2004-07-29
US6681102B1 (en) 2004-01-20
ATE251816T1 (de) 2003-10-15
GB9916901D0 (en) 1999-09-22
WO2001006637A1 (en) 2001-01-25
TW490927B (en) 2002-06-11

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase